Vise.



' R. A. HORNING.

' VISB.

APPLIUATION FILED AUG. 5, 1908.

Patented Apr..6. 1909.

ernten ROBERT ALLEN HORNING, OF LANARK, ILLINOIS, ASSIGNOR OF ONE-FOURTHIO HARRY HEPFER AND ONE-FOURTH TO JAMES M. LINDSAY, OF LANARK, ILLINOIS.

VISE.

Application filed August 5, 190B.

lo all whom 'it may concern.'

Be it kno t. n that I, Iioisnn'r ALLEN Honniivo, a citizen olt theUnited States, residing at Lanark, in the county of Carroll and. Stateot Illinois, have invented certain not." and useful Improvements inI)arallel-Jav: Vises, olI which the following is a specification.

This invention relates to power vises, and has particular reference tothat class of devices `which are designed for use in connection r. ithwork benches, or the like, and usually operated by hand.

Among the se 'eral ects aimed at in the present improvements are toeconomize space, secnre easy nranipulation of the movable portion ot thevise throughout its compass, and to save time in operation.

For a full understanding of the invention, including its constructionand characteristic advantages, reference is to be had to the followingdetail description and the accom panying drawings, in hich,

Figure l is a side elevation, with certain parts broken array, showingin full lines the vise in a substantially closed position and in dottedlines, in its full openv position, and li ig. 2 is a transversesectional detail on the line ol'v Ifig. I, showing vthe manner in whichthe irame constitutes a stop lor the bell crank lovers in the positionindicated for the parts in dotted lines in Fig. l.

rldiroughout the following description and on the several figures of thedrawings, similar parts are referred to by like reference characters.

This invention in its preferred embodiment comprises a stationary 16having a stationary leg ll. Said jaw and leg may be secured in anyconvenient manner to any suitable type of support such as a bench l2. Atany convenient point, preferably near the upper end, the stationaryT legis provided `with an internally threaded hole 13, and below said holeare a plurality of transverse slots lil extending through the leg. Amovable jaw 1,5 has the leg 16 arranged parallel to and movable in closeproximity to the stationary leg 1l. The specific form of the jaws l()and l5 as well as the legs Il and 16 may be varied to a considerable eX-tent mithin the scope of this invention. As a convenient power means foroperating the movable an', I provide in the movable leg 16 a smooth hole17 in alinernent with the Specification of Letters Patent.

Patented April 6, 1909.

Serial No. 447,141.

threaded hole I3 aforesaid, and cooperating ith said holes is a suitablescrew 18 having threaded connection with the stationary and loose rotaryconnection with the movable jaw. In order to prevent longi` tudinaldisplacement of the screw with relation to the movable jaw, the screw isprovided `with a groove i8 into which projects a transverse locking bolt19, the bolt being secured in the movable jaw in any suitable manner.The head 2() of the screw coperates with the outer face of the movablejaw in the customary manner and is operated by a handle 21.

The mechanism employed to cause parallel movement ot' the jaw 15 withrelation to the jaw l0 comprises the following elements: A pair o1c bellcranks 22 and 22 pivoted in substantially the same plane within the steftionary leg l1 and beneath the bench l2. As herein disclosed the meansfor supporting said bell cranks consists of tulcrum blocks 23 securedupon the inner 'lace of the stationary leg and within which blocks thebell cranks are pivoted upon pivots 24 and 24. One end oi each ot saidbell cranks projects upwardly adjacent to its corresponding slot lll,and the other ends of the bell cranks are connected by a rigid bar 25,whereby the bell cranks are caused to operate simultaneously upon theirpivots. A pair of guide links 26 and 26 are pivoted in sockets 27 and 27on pivot pins 28 and 28 secured in the movable leg. Said links areguided through the slots le, and their inner ends are pivoted to theadjacent ends of the bell cranks. It will be apparent that the screw 18,links 26 and 26, bell cranks and 22 and bar 25 constitute the entireconnecting means between the jaws and for this reason the ordinary'lulcrum bar usually employed to support the lower end of the movableleg, and which requires frequent adjustment in accordance with thedifferent sizes of work to be held,is dispensed with. In order to secureease of operation ot a vise it is desirable that the screw have a loosethreaded connection, and for this reason auxiliary guiding and supporting means are necessary for the movable jaw. The links 26 and 26serve therefor-e as such additional supporting and guiding means as wellas to cause parallel movement thereof. Again, it is to be noted that themeans herein en'iployed to cause parallelism whereby a minimum amount oiroom 1s required for construction and manipulation of the vise.Heretofore parallel movements for vises have usually been disposedbetween the liaws, necessitating the use oi a great deal more room thanis contemplated by this invention. v

The several parts oi' this invention may b constructed of any suitablematerials and in various sizes and proportions, depending upon theexigencies in particular cases, without departing from the spirit oi thYinvention hereinafter claimed.

Having thus described the invention, what is claimed as new, is:

l. The herein described parallel aw vise comprising, in combination, astationary jaw having a supporting leg, said leg having an internallythreaded hole and a plurality of guide slots therethrough, a movable jawhaving a supporting leg parallel to said stationary leg, said movableleg having a smooth hole in alinement with said threaded hole and aplurality ot sockets in alinement with said slots, a power screwcooperating with said jaw holes, means to prevent longitudinal movementof the screw in said smooth hole, a plurality of guide links pivoted insaid sockets and projecting through said slots, bell crank leverspivoted at their elbows adjacent to said stationary leg and at one endto the said slot-s and pivoted at their ends to said bell cranks and themovable leg.

3. A vise comprising, in combination, a stationary and its leg havingtransverse slots therethrough, a pair of fulcrum blocks secured on theinner face of said leg, a pair of bell cranks pivoted in the same planeto said blocks, a rigid bar connecting the bell cranks to causesimultaneous movement thereof on their pivots, a movable jaw and leg,power means to cause parallel movement thereof in close proximity to thestationary leg, and a pair of links pivoted to the movable leg and bellcranks and guided through said slots, substantially as set forth.

In testimony whereoie l my signature in presence of two witnesses.

ROBERT ALLEN HORNlNG. litnesses:

HARRY HEPFER, f JAMns M. LiNnsAY. s y

